How about: 5-4 = 1
Factors of 20 are 1, 2, 4, 5, 10 and 20. And their sum is 1 + 2 + 4 + 5 + 10 + 20 = 32.
1 + 2 + 4 = 7
Factors for 20 are: 1, 2, 4, 5, 10, 20 Prime Factors: 2, 5 sum of prime factors = 2 + 5 = 7
Add them up. The factors of 9 are 1, 3 and 9. The sum of the factors is 13.
1 + 2 + 4 + 5 + 10 + 20 = 42
The factors of 91 are: 1 7 13 91.The prime factors are: 7 x 13The sum of the prime factors = 7 + 13 = 20
20 and 1 10, 5, 4 and 2
Well, honey, the sum of counting numbers from 1 to 20 is 210. You add up 1 + 2 + 3... all the way to 20 and you get your answer. So, go ahead and impress your friends with your newfound math knowledge.
Its factors are: 1, 3, 9, 27 and they add up to 40
3, 3, 19 and 20 lots of (-1). However, normally the term "factor" applies to positive integers. In that case, there is no answer to the question.
12 and 3 10 and 5 16 and -1 20 and -5
To find the common factors of 25 and 80, we first determine the factors of each number. The factors of 25 are 1, 5, and 25, while the factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, and 80. The common factors shared by both numbers are 1 and 5. To find the sum of these common factors, we add them together: 1 + 5 = 6. Therefore, the sum of all the common factors of 25 and 80 is 6.